Improvement in towjng-hooks for canal-boats



@sind ftatet @met mitte LEONARD R. SHIPMAN, OEBLQOMSBURG, PENNSYLVANIA.

Letters Patent No. 106,514, cla-ted August 16, 1870. t

IMPROVEMENT IN TG'WING-HOKS FOR AGANZAllh-BCATS.

The Schedule referred to .jin-these Letters Ptent and making part of thel same.

fTo all whom 'it may concern Be it known that I, LEONARD 1t. SHIPMAN, of Bloomsburg, in the county of Columbia and State of Pennsylvania, have invented a new and valuable Improvementiu Tow-Hooks; and Ido hereby declare that the following isa full, clear, and exact description of the construction and operation of the same, reference `being had to the annexed drawing making a part of this specification, and tothe letters and gnres of ref-v erence marked thereon,

Figure 1 of the drawing-is a top view of my invention; p

Figure '2 is a side view;v and Figure 3 is a cent-ral vertical longitudinal section of the same.'

My invention relates to means for, casting off the tow-rope of a canal-boat; and consists in the construc. tion and novel alrangement of an adjustable towhook, designed to be secured at any part of the deck, and provided with a spring catch, whereby it may be east loose at a moments warning, and the loop ot' the rope allowed to slip oif. v

lhe letter A, ot' the drawing, designates the bedplate of the tow-hook.

It is provided with a project-ion at n, and a slot at z, whereby it may readily be secured by means of two staples, Ir r, and the conining-hook s, at any point of the deck of the boat.

K represents the hook or post, over which the loo It will also save time in passing through locks, es-V pecially at night, as the helmsman will be able to cast oli' at the proper time without calling on a second person.

What I claim as my invention, and desire to seeure by Letters Patent, isy

The tow-hook herein described, having bed-plate A, with toe n and slot z, hinged post K, ring L, and catch G, operated by spring, substantially as and for the purpose specilied.

In testimony that I claim the above, I have hereunto subscribed my name in the presence of two witnesses.

. LEONARD R. SHIIMAN.

W'itnesses:

O. B. BnooKwAY, F. CoonnY. 

